Creating an ontology by importing an XML from an Open Data Portal
Steps
 1) First look for an XML with interesting data, for instance from an Open Data Portal. Barcelona offers a good amount of DataSets:
http://opendata-ajuntament.barcelona.cat/data/es/dataset
To test the platform's capacities, take a file with a huge amount of records, such as:
http://opendata-ajuntament.barcelona.cat/data/es/dataset/arbrat-zona
You can download it as a 48 MB XML:
Use XML format so that you can try to convert an XML to an Ontology (As you know, an ontology is internally represented with a JSON-schema; and an ontology instance is represented with a JSON):
Download it from:Â http://opendata-ajuntament.barcelona.cat/data/dataset/9b525e1d-13b8-48f1-abf6-f5cd03baa1dd/resource/4c49c634-8fbf-4ecc-b6a0-c448268271ba/download
2) Once it is downloaded, go to the Control Panel. Access with a Developer user:
https://www.onesaitplatform.online/controlpanel/login
3) Go to the option:
Once there, select the file to load:
4) The upload process will start. This can take some minutes depending on your bandwidth. Once it is loaded, you will see:
You can see that the Platform has automatically converted the previous JSON to XML:
5) (Optional) You can ask that the UI shows the JSON-Schema representing your JSON by clicking on the button Â
6) Finally, click on the button  that will request you the data for your new Ontology:
SelectÂ
and click OK
7) The load process will begin until the 45247 ontology instances are inserted:
8) Once loaded, you can go to the Query Tools to see data inserted in your ontologies:
where you will see the new ontology, ArbolesBCN: